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1 | /* |
2 | * eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode | |
3 | * | |
4 | * Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com> | |
5 | * | |
6 | * based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c | |
7 | * which is Copyright 2009 Simtec Electronics | |
8 | * and on sound/soc/imx/phycore-ac97.c which is | |
9 | * Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | * | |
16 | */ | |
17 | ||
18 | #include <linux/module.h> | |
19 | #include <linux/moduleparam.h> | |
20 | #include <linux/device.h> | |
21 | #include <linux/i2c.h> | |
22 | #include <sound/core.h> | |
23 | #include <sound/pcm.h> | |
24 | #include <sound/soc.h> | |
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25 | #include <asm/mach-types.h> |
26 | ||
27 | #include "../codecs/tlv320aic23.h" | |
28 | #include "imx-ssi.h" | |
29 | ||
30 | #define CODEC_CLOCK 12000000 | |
31 | ||
32 | static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, | |
33 | struct snd_pcm_hw_params *params) | |
34 | { | |
35 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
add330ec SH |
36 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
37 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
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38 | int ret; |
39 | ||
40 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | | |
41 | SND_SOC_DAIFMT_NB_NF | | |
42 | SND_SOC_DAIFMT_CBM_CFM); | |
43 | if (ret) { | |
44 | pr_err("%s: failed set cpu dai format\n", __func__); | |
45 | return ret; | |
46 | } | |
47 | ||
48 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
49 | SND_SOC_DAIFMT_NB_NF | | |
50 | SND_SOC_DAIFMT_CBM_CFM); | |
51 | if (ret) { | |
52 | pr_err("%s: failed set codec dai format\n", __func__); | |
53 | return ret; | |
54 | } | |
55 | ||
56 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, | |
57 | CODEC_CLOCK, SND_SOC_CLOCK_OUT); | |
58 | if (ret) { | |
59 | pr_err("%s: failed setting codec sysclk\n", __func__); | |
60 | return ret; | |
61 | } | |
43793207 | 62 | snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0); |
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63 | |
64 | ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, | |
65 | SND_SOC_CLOCK_IN); | |
66 | if (ret) { | |
67 | pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n"); | |
68 | return ret; | |
69 | } | |
70 | ||
71 | return 0; | |
72 | } | |
73 | ||
74 | static struct snd_soc_ops eukrea_tlv320_snd_ops = { | |
75 | .hw_params = eukrea_tlv320_hw_params, | |
76 | }; | |
77 | ||
78 | static struct snd_soc_dai_link eukrea_tlv320_dai = { | |
79 | .name = "tlv320aic23", | |
80 | .stream_name = "TLV320AIC23", | |
add330ec | 81 | .codec_dai_name = "tlv320aic23-hifi", |
43c63188 | 82 | .platform_name = "imx-fiq-pcm-audio.0", |
f0fba2ad | 83 | .codec_name = "tlv320aic23-codec.0-001a", |
add330ec | 84 | .cpu_dai_name = "imx-ssi.0", |
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85 | .ops = &eukrea_tlv320_snd_ops, |
86 | }; | |
87 | ||
88 | static struct snd_soc_card eukrea_tlv320 = { | |
89 | .name = "cpuimx-audio", | |
6aff8ccb | 90 | .owner = THIS_MODULE, |
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91 | .dai_link = &eukrea_tlv320_dai, |
92 | .num_links = 1, | |
93 | }; | |
94 | ||
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95 | static struct platform_device *eukrea_tlv320_snd_device; |
96 | ||
97 | static int __init eukrea_tlv320_init(void) | |
98 | { | |
99 | int ret; | |
100 | ||
8a0bbbeb | 101 | if (!machine_is_eukrea_cpuimx27() && !machine_is_eukrea_cpuimx25sd() |
2c4066cc EB |
102 | && !machine_is_eukrea_cpuimx35sd() |
103 | && !machine_is_eukrea_cpuimx51sd()) | |
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104 | /* return happy. We might run on a totally different machine */ |
105 | return 0; | |
106 | ||
107 | eukrea_tlv320_snd_device = platform_device_alloc("soc-audio", -1); | |
108 | if (!eukrea_tlv320_snd_device) | |
109 | return -ENOMEM; | |
110 | ||
f0fba2ad | 111 | platform_set_drvdata(eukrea_tlv320_snd_device, &eukrea_tlv320); |
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112 | ret = platform_device_add(eukrea_tlv320_snd_device); |
113 | ||
114 | if (ret) { | |
115 | printk(KERN_ERR "ASoC: Platform device allocation failed\n"); | |
116 | platform_device_put(eukrea_tlv320_snd_device); | |
117 | } | |
118 | ||
119 | return ret; | |
120 | } | |
121 | ||
122 | static void __exit eukrea_tlv320_exit(void) | |
123 | { | |
124 | platform_device_unregister(eukrea_tlv320_snd_device); | |
125 | } | |
126 | ||
127 | module_init(eukrea_tlv320_init); | |
128 | module_exit(eukrea_tlv320_exit); | |
129 | ||
130 | MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>"); | |
131 | MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); | |
132 | MODULE_LICENSE("GPL"); |